Safety, Tolerability and PK/PD of RB006 in a Healthy Volunteer SAD

NCT01872572 | Completed Phase 1 DMC

• 1 other identifier: REG1-CLINSC101
• Study Type: interventional
• Target: 36
• Locations: 1 country
• Sites: 1

Brief Summary

This was a Phase 1a, single-center, double-blind, randomized, placebo-controlled study of the safety, tolerability, PK, and PD of single ascending doses of RB006 administered as an SC injection, with and without IV RB007 (an active control agent for RB006), in healthy young volunteers. The study originally planned to enroll 4 cohorts of 8 subjects each (N=32); however, upon review cohort (Cohort 1-A) was necessary in order to fully define the PK profile of SC RB006. Therefore, 36 subjects were enrolled in this study. Each cohort was balanced by sex with no more than 2/3 of one sex enrolled in any particular cohort (i.e., 5 of 8 subjects in each cohort). No subject participated in \>1 dose group, and progression to the next higher dose only occurred if the prior dose level was well tolerated, as assessed by a Safety Review Committee (SRC)

Conditions

Healthy Volunteer

Outcome Measures

Primary Outcomes (1)

• Primary Outcome of this study using SC RB006 with and without RB007 in healthy volunteers was safety as determined by Treatment Emergent Adverse Events

  10 days

Secondary Outcomes (3)

• Outcome of this study using SC RB006 with and without RB007 in healthy volunteers was safety as determined by Serious Adverse Events

  10 days

• Outcome of this study using SC RB006 with and without RB007 in healthy volunteers was pharmacodynamics as determined by change from baseline in aPTT

  Pre-dose, 1, 2, 3, 6, 9, 12, 15, 18, 24, 30, 36, 48, 60, 72, 84, 96, 120, 144, 168, 216 (and if applicable, 264) hours post RB006 dose

• Outcome of this study using SC RB006 with and without RB007 in healthy volunteers was pharmacokinetics as determined by Maximum Observed Plasma Concentration (Cmax)

  Pre-dose, 1, 2, 3, 6, 9, 12, 15, 18, 24, 30, 36, 48, 60, 72, 84, 96, 120, 144, 168, and 216 (and if applicable, 264) hours post-RB006 dose

Study Arms (5)

Cohort 1

OTHER

Cohort 1: 6 subjects received Subcutaneous RB006 0.5 mg/kg and 2 subjects received SC placebo

Drug: Subcutaneous RB006 0.5 mg/kg; Drug: Placebo

Cohort 1-A

OTHER

Cohort 1-A: 4 subjects received open-label Subcutaneous RB006 0.5 mg/kg

Drug: Subcutaneous RB006 0.5 mg/kg

Cohort 2

OTHER

Cohort 2: 6 subjects received Subcutaneous RB006 1.0 mg/kg and 2 subjects received SC placebo

Drug: Subcutaneous RB006 1.0 mg/kg; Drug: Placebo

Cohort 3

OTHER

Cohort 3: 6 subjects received Subcutaneous RB006 3.0 mg/kg and 2 subjects received SC placebo

Drug: Subcutaneous RB006 3.0 mg/kg; Drug: Placebo

Cohort 4

OTHER

8 subjects received subcutaneous RB006 2.0 mg/kg as well as the following: * 4 subjects received an IV bolus injection of 1 mg/kg RB007 at 72 hours post-RB006 administration * 4 subjects received an IV bolus injection of 1 mg/kg RB007 at 24, 72, and 120 hours post-RB006 administration

Drug: Subcutaneous RB006 2.0 mg

Interventions

Subcutaneous RB006 0.5 mg/kg DRUG

Subcutaneous RB006 0.5 mg/kg

Also known as: SC RB006

Cohort 1; Cohort 1-A

Subcutaneous RB006 1.0 mg/kg DRUG

Subcutaneous RB006 1.0 mg/kg

Also known as: SC RB006

Cohort 2

Subcutaneous RB006 3.0 mg/kg DRUG

Subcutaneous RB006 3.0 mg/kg

Also known as: SC RB006

Cohort 3

Subcutaneous RB006 2.0 mg DRUG

* Arm 1: 4 subjects received an IV bolus injection of 1 mg/kg RB007 at 72 hours post-RB006 administration * Arm 2: 4 subjects received an IV bolus injection of 1 mg/kg RB007 at 24, 72, and 120 hours post-RB006 administration.

Also known as: SC RB006

Cohort 4

Placebo DRUG

Placebo

Also known as: SC Placebo

Cohort 1; Cohort 2; Cohort 3

Eligibility Criteria

• Age: 18 Years - 45 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• An Institutional Review Board (IRB)-approved informed consent was signed and dated prior to any study-related activities.
• Subject was between the ages of 18 and 45 years, inclusive.
• Subject was a female with a negative urine or serum pregnancy test or postmenopausal for at least 1 year prior to randomization.
• Subject had a body mass index (BMI) between 18 kg/m2 and 32 kg/m2 (weight/\[height\]2) and was ≥50 kg and ≤120 kg total body weight.
• Subject had normal (or abnormal and clinically insignificant) laboratory values at Screening.
• Subject was medically normal with no significant abnormal findings at the Screening physical examination.
• Subject had the ability to understand the requirements of the study and a willingness to comply with all study procedures.
• Subject had not consumed and agreed to abstain from taking any dietary supplements or nonprescription drugs
• Subject had not consumed and agreed to abstain from taking any prescription drugs
• Subject had not consumed alcohol-containing beverages for 3 days prior to CRU admission
• Subject had not consumed grapefruit or grapefruit juice within the 14 days prior to CRU admission
• Subject had not used tobacco or nicotine-containing products within 6 months prior to CRU admission

You may not qualify if:

• Evidence or history of clinically significant oncologic, pulmonary, hepatic, gastrointestinal (GI), cardiovascular, hematologic, metabolic, neurological, immunologic, nephrologic, endocrine, or psychiatric disease.
• Any evidence or history of intracranial bleeding, aneurysm, or thrombotic or hemorrhagic stroke.
• Any known individual or family history of a bleeding diathesis or coagulopathy.
• Active or expected menstruation during the Treatment Phase (females only).
• History of thrombocytopenia associated with abnormal bleeding or risk of a bleeding event, or screening or baseline platelet count \<100,000/mm3.
• History of thrombocytosis associated with a thrombotic event or risk for a thrombotic event, or screening or baseline platelet count \>600,000/mm3.
• Endoscopically confirmed peptic ulcer disease within 3 years of CRU admission or GI bleeding within 3 months of CRU admission, including a positive stool for occult blood at Screening or Baseline.
• Urinary tract bleeding within 3 months of CRU admission, including microscopic hematuria on screening or baseline urinalysis.
• Unusual or prolonged bleeding (e.g., gum bleeding, nosebleeds, easy bruising), as documented on the Self-Reported Bleeding Questionnaire, at Screening.
• Severe trauma, fracture, major surgery, or biopsy of a parenchymal organ within 3 months of CRU admission.
• Severe persistent hypertension (systolic pressure \>180 mmHg or diastolic pressure \>110 mmHg).
• Baseline hemoglobin \<12.0 g/dL for males or \<11.0 g/dL for females; prothrombin time (PT) greater than the ULN; or aPTT greater than the ULN.
• Clinically significant liver dysfunction (e.g., as evidenced by elevated liver function tests).
• Clinically significant renal dysfunction (e.g., estimated glomerular filtration rate \<60 mL/min or serum creatinine \>1.5 mg/dL).
• History of illicit drug abuse in the past year or current evidence of such abuse in the opinion of the Investigator.

Sponsors & Collaborators

• Regado Biosciences, Inc.: lead

Study Sites (1)

PPD Development, LP

Austin, Texas, 78744, United States

Location

Related Publications (2)

• Vavalle JP, Rusconi CP, Zelenkofske S, Wargin WA, Alexander JH, Becker RC. A phase 1 ascending dose study of a subcutaneously administered factor IXa inhibitor and its active control agent. J Thromb Haemost. 2012 Jul;10(7):1303-11. doi: 10.1111/j.1538-7836.2012.04742.x.

  PMID: 22500821 RESULT

• Park EJ, Choi J, Lee KC, Na DH. Emerging PEGylated non-biologic drugs. Expert Opin Emerg Drugs. 2019 Jun;24(2):107-119. doi: 10.1080/14728214.2019.1604684. Epub 2019 Apr 19.

  PMID: 30957581 DERIVED

Study Officials

• Matthew M Medlock, MD

  PPD Development, LP

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: RANDOMIZED
• Masking: QUADRUPLE
• Who Masked: PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
• Intervention Model: PARALLEL
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: June 2, 2013
• First Posted: June 7, 2013
• Study Start: August 1, 2009
• Primary Completion: December 1, 2009
• Study Completion: December 1, 2009
• Last Updated: June 7, 2013

Record last verified: 2013-06

Locations

US (1)